I have a program which uses CGIDEV2 to create an XML file. It reads a
template from the root filesystem, fills in the template, and writes the
completed XML file to the same directory (with a different filename, of
course). I've worked around the problem, but it's nagging me and I
can't figure out why this is happening.
I realized as I was updating the program for the next tax year that I
was generating the file as CCSID 819 (ISO-8859-1), but my <?xml ...?>
header stated UTF-8. I must have just used a text editor to convert it
before sending it last year.
I tried changing the output file to be CCSID 1208 (UTF-8) by changing
the CCSID parameter on wrtHTMLtoSTMF(), but I get errno=3490 (ECONVERT)
when CGIDEV2 attempts to re-open the output file to write the output.
<goryDetails>
wrtHTMLtoSTMF does something like this:
create a temporary filename (desired filename + 'TEMP' + job number)
unlink tempfile if it exists
open tempfile to create it (empty with proper CCSID) with:
C eval FileHandle = open(
C StmfTemp:O_CREAT + O_WRONLY +
C O_TRUNC + O_TEXTDATA + O_CODEPAGE +
C O_LARGEFILE:
C S_IRWXU + S_IROTH + S_IXOTH:CodePage)
where CodePage is 1208, which I've passed as a parameter.
re-open tempfile for writing:
C eval FileHandle = open(
C StmfTemp:O_CREAT + O_WRONLY +
C O_TRUNC + O_TEXTDATA:
C S_IRWXU + S_IROTH + S_IXOTH)
At this point, I get the ECONVERT error. I found a forum post* from
Scott Klement stating that CGIDEV2 doesn't support multi-byte CCSIDs for
writing to STMF, but I don't think UTF-8 counts. I'm also not sure why
the above would fail for multi-byte CCSIDs, the documentation for
O_TEXTDATA doesn't mention such a limitation.
</goryDetails>
If I simply change the CodePage parameter to 819 and my template to use
<?xml version="1.0" encoding="ISO-8859-1"?>, everything works fine.
FWIW, I one thing I tried was making the template file UTF-8 encoded. I
learned about the BOM bytes** that some software writes at the beginning
of multi- or variable-byte encoded files. CGIDEV2 doesn't like the BOM
bytes, but seems to work fine with a template file that is CCSID 1208.
I don't know where to look next - any suggestions?
Adam
*
http://forums.systeminetwork.com/isnetforums/archive/index.php?t-47517.html
(or
http://tinyurl.com/6d4wk8 )
**
http://en.wikipedia.org/wiki/Byte-order_mark#Representations_of_byte_order_marks_by_encoding
(or
http://tinyurl.com/5rojua)
midrange.com
